How to configure CISCO 2811 with two public IP address

whizkid · 10-10-2007, 11:47 AM

Dear All

We have a current setup with 217.x.x.x for one of our clients. All the Application activities going through that public ip address using NAPT (Network Address port translation) . I have to configure a backup/fail over line for the same client. So we took another internet line (ADSL) from a different ISP. These ISP having different public address. I am using CISCO 2811 ISR. My clients all application's communicating to our servers through the above IP address. So I can't change the ip address.How we can resolve this issue without changing the IP address?

Thanks in advance
Anumod

kinbard · 10-10-2007, 11:54 AM

If I remember correctly with cisco you have to do it through an access list, pointing the ADSL port to the 217.x.x.x and vice versa.

whizkid · 10-10-2007, 11:58 AM

Thanks Kinbard,

But How i can configure load balance or failover access list?can you please advice me?

Anumod

kinbard · 10-10-2007, 12:06 PM

I will have to go through and find it in my cisco book, which is at home. Its been a long time since that class. Are you pretty familiar with cisco routers? The reason I ask is it is extremely easy to mess up the configurations.

whizkid · 10-10-2007, 12:12 PM

Kinbard don't worry,

Me only configured the existing setup. I configured Leased line as primary line and ISDN as backup on the same router for another application. But I never worked with ADSL with public IP. My clients communicating with the server using 3G connection (Using handheld device). Please try to get some solution for this.

Thanks
Anumod

Siddharthss · 02-08-2008, 05:35 AM

Hi Whizkid,
Did u get the answer which u were searching???

Siddharth

whizkid · 02-08-2008, 09:03 PM

No Sidharth. Its not yet resolved.

Siddharthss · 02-12-2008, 03:32 AM

Actually im also facing similar problem..

10-10-2007, 11:47 AM	#1 (permalink)
whizkid Registered User Join Date: Oct 2007 Posts: 5 OS: windowns 2003,solaris,Oracle linux	How to configure CISCO 2811 with two public IP address Dear All We have a current setup with 217.x.x.x for one of our clients. All the Application activities going through that public ip address using NAPT (Network Address port translation) . I have to configure a backup/fail over line for the same client. So we took another internet line (ADSL) from a different ISP. These ISP having different public address. I am using CISCO 2811 ISR. My clients all application's communicating to our servers through the above IP address. So I can't change the ip address.How we can resolve this issue without changing the IP address? Thanks in advance Anumod

10-10-2007, 11:54 AM	#2 (permalink)
kinbard Hardware Tech Team Join Date: Jun 2006 Location: Texas Posts: 2,365 OS: Solaris 10, XP,SuSE10, 10.3,11, Freespire,PCLinuxOS, Vista HP, and a partridge in a pear tree	Re: How to configure CISCO 2811 with two public IP address If I remember correctly with cisco you have to do it through an access list, pointing the ADSL port to the 217.x.x.x and vice versa. __________________ Half viking, half pirate, stronger than both 5 Steps XP Repair

10-10-2007, 11:58 AM	#3 (permalink)
whizkid Registered User Join Date: Oct 2007 Posts: 5 OS: windowns 2003,solaris,Oracle linux	Re: How to configure CISCO 2811 with two public IP address Thanks Kinbard, But How i can configure load balance or failover access list?can you please advice me? Anumod

10-10-2007, 12:06 PM	#4 (permalink)
kinbard Hardware Tech Team Join Date: Jun 2006 Location: Texas Posts: 2,365 OS: Solaris 10, XP,SuSE10, 10.3,11, Freespire,PCLinuxOS, Vista HP, and a partridge in a pear tree	Re: How to configure CISCO 2811 with two public IP address I will have to go through and find it in my cisco book, which is at home. Its been a long time since that class. Are you pretty familiar with cisco routers? The reason I ask is it is extremely easy to mess up the configurations. __________________ Half viking, half pirate, stronger than both 5 Steps XP Repair

10-10-2007, 12:12 PM	#5 (permalink)
whizkid Registered User Join Date: Oct 2007 Posts: 5 OS: windowns 2003,solaris,Oracle linux	Re: How to configure CISCO 2811 with two public IP address Kinbard don't worry, Me only configured the existing setup. I configured Leased line as primary line and ISDN as backup on the same router for another application. But I never worked with ADSL with public IP. My clients communicating with the server using 3G connection (Using handheld device). Please try to get some solution for this. Thanks Anumod

02-08-2008, 05:35 AM	#6 (permalink)
Siddharthss Registered User Join Date: Feb 2008 Posts: 2 OS: win Xp	Re: How to configure CISCO 2811 with two public IP address Hi Whizkid, Did u get the answer which u were searching??? Siddharth

02-08-2008, 09:03 PM	#7 (permalink)
whizkid Registered User Join Date: Oct 2007 Posts: 5 OS: windowns 2003,solaris,Oracle linux	Re: How to configure CISCO 2811 with two public IP address No Sidharth. Its not yet resolved.

02-12-2008, 03:32 AM	#8 (permalink)
Siddharthss Registered User Join Date: Feb 2008 Posts: 2 OS: win Xp	Re: How to configure CISCO 2811 with two public IP address Actually im also facing similar problem..